You can access them through guided meditation. I accessed them to see my life purpose.
They contain all knowledge of past, future and the present of the universe. Through the meditation you can choose which part you want to see and also clear any misconceptions you may have about your past, future or present.

In Sri Japji Sahib jee, there is a Pauri which lists all the immoral/unethical/sinful activities which people indulge in.
Please look at a verse from that Pauri below:
ਅਸੰਖ ਅਮਰ ਕਰਿ ਜਾਹਿ ਜੋਰ ॥
Countless impose their will by force.
From the above verse, one can easily deduce that forcing someone to adopt a religion is an immoral activity and thereby, completely against Sikh religion.
There are more verses which can allude to this fact. Please let me know, if you want to know more about them.
Bhul chuk maaf

THE BUS STOP DOESN’T MATTER; YOUR RELATIONSHIP WITH THE DRIVER DOES
A boy stood on a sidewalk waiting for a bus. A man walking by spotted the boy and gave him some gentle advice.
"Son," he said, "if you're waiting for the bus you need to move to the street corner. That's where the bus stops for passengers.""It's OK," said the boy. "I'll just wait right here and the bus will stop for me."
The man repeated his advice, but the boy never moved. Just then, the bus appeared. Amazingly, the bus pulled over to where the boy stood and he hopped in.
The man on the sidewalk stood speechless. The boy turned around in the doorway and said, "Mister, I knew the bus would stop here, because the bus driver is my dad!
"When you've got a relationship with the bus driver, you don't need a bus stop. If you've given your heart to the King of Kings, you're in a royal family of unspeakable proportions.
Today I would like to remind you that when you know the Driver of your life, you can take the bus of life anywhere. He will stop and pick you up where people think it is not possible.
Whether you are unemployed, broke, single or married, or childless or divorced, or widowed.
What matters is that you know Him who is able to do exceedingly abundantly above what we can think or even imagine.However, the BIG question is : "Is the Driver your Father?"
"Are you still His child?﻿
You can only get that privilege if He is your Father. Enjoy the ride with your Father.
*God knows the best, He does the best, He gives the best because He is the best.
May He make you achieve the best in everything you do in life now and forever.
Stay blessed,
Sat Sree Akal.